1) Describe the relationship between carbon and human activities represented in the model. 2) Explain how the human activities highlighted in your model have affected global climate.

3) Provide examples from your model of conservation of matter through Earth’s spheres.

4)Identify the limitations of your carbon model in accounting for all of Earth’s carbon.

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

What must be done to breed dogs for a partical trait